I'm a Dummy, Tell Me About Turntable Mats

To not use a mat, a platter must be made with relief for the thicker parts of a record in order for the read surface to have its best chance of coupling with the platter.
FWIW, I typically NEVER use a mat on Delrin or acrylic platters.

Had lots of success with the 5mm thick Achromat on suspended vintage Thorens, AR & Linn tables (2-piece platters) all with good grip and no slipping. Have had slipping on Rega one piece platters which required thin double-sided (carpet) tape to grip.

The current Luxman mat is a sweetheart on every high mass design system I’ve tried it on. Record weight &/or clamps NOT required.

Mijo, This "stylus noise" to which you refer, are you talking about the faint echo of the musical signal that one can often hear if your ear is close to the playing surface?  That's the only noise I typically hear, and it's due to the microphonic nature of a cartridge.  I am guessing you are talking about some other type of noise, but I don't know what.

Vertere Technomat. About $130.
http://http//www.enjoythemusic.com/magazine/equipment/0721/Vertere_Techno_Mat_Review.htm

I've tried a few different mats and combinations of same. I found that a deerskin mat, was the only one to sound better than no mat on my acrylic platter with screw on clamp. And it sounds better 'suede side up'.

I knew there would eventually be the usual opinions here. I have one. 96.73% of the time they change the sound but don't improve it. I always wondered if HW was having a little fun at the expense of the rubes when he added a piece of very thin brown parchment paper as a platter mat with his decks. Platter mats, periphery rings and center weights all change the sound. Mats the most, periphery rings the least, center clamps/weights in the middle. Once your ears and brain become accustomed to the change they don't add anything to ultimate enjoyment. This is not what most vinyl enthusiasts want to believe, so they won't. 
The biggest benefit of platter mats is to enable those with VTA/SRA problems-those that can't go low enough-to achieve proper VTA/SRA. I think Herbie's caught onto this.